+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   487466 (2014 SJ138) Classification: Main-belt Asteroid          SPK-ID: 2487466 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0257742021768215 7.0588e-08   a 2.923609300285438 5.7248e-08 au q 2.848255603093846 2.176e-07 au i 6.362851486273434 1.7651e-05 deg node 25.24856520435379 0.00010567 deg peri 251.1556601316876 0.00046725 deg M 127.9631904135957 0.00045539 deg tp 2458351.477149187640 (2018-Aug-20.97714919) 0.0023096 TDB period 1825.90185144075 5.00 5.3631e-05 1.468e-07 d yr n .1971628429621985 5.7911e-09 deg/d Q 2.99896299747703 5.8724e-08 au   Orbit Determination Parameters    # obs. used (total)      83      data-arc span      4605 days (12.61 yr)      first obs. used      2007-02-23      last obs. used      2019-10-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .64102      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 15:27:19   Additional Information  Earth MOID = 1.84042 au   Jupiter MOID = 2.01545 au   T_jup = 3.269  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.7   n/a MPO495389   487466 (2014 SJ138)          Discovered 2007-Feb-23 by Spacewatch at Kitt Peak Reference: Last Updated: 2017-03-14 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-28 07:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin